358 WILMORE : THORNTON, MARTON AND BROUGHTON-IN-CRAVEN. 
A very few yards to the west there are black calcareous 
shales, with thin limestones similar to the beds in the road-side 
cutting near Thornton Church and containing the same fossils. 
I suppose that the relation of these beds to those of Rain 
Hall is as shown in Fig. 3. 
There is a new exposure which is of great interest in its 
relation to the Rain Hall beds. A quarry near Long Ing Canal 
Bridge, that is near the western end of Rain Hall Quarry, has 
recently been opened. It shows the Caninia bed of Rain Hall 
and the overlying dark blue limestone. The beds dip north- 
west, so that here we have the turn over of the beds quite close 
at hand. This exposure is not more than 50 yards from the 
western end of Rain Hall Quarry. It is noteworthy that there 
is again much slickensiding seen. 
Fig. 3. 
SUG(JESTED DIAGRAM-SECTION ACROSS KAIN HALL AND GILL ROCK BEDS, 
DISTANCE 1,000 YARDS. 
a = Rain Hall. ?< = Rain Hall Plantation. c = Small cutting near Gill Church. 
d = Gill Rock. 
The next important exposure is that of Gill Rock, near 
Gill Church — No. (8) on the map. It is a large cutting now 
partly grown over. At the western end quarrying operations 
have been re-commenced, however. The beds dip at a high 
angle to north-north-west, and the Caninia bed of Rain Hall is 
almost at the bottom of the series. These beds are described 
by Phillips, by the officers of the Survey, and hy Messrs. Hind 
and Howe. The sequence is as follows : — 
Shales with thin limestones (like those of Salterforth 
cutting). 
Crinoidal band. 
Shales. 
"Dun stone." 
